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经营范围
发明名称
Land leveler
摘要
申请公布号
US3047969(A)
申请公布日期
1962.08.07
申请号
US19590855923
申请日期
1959.11.27
申请人
PURDY GEORGE W
发明人
PURDY GEORGE W.
分类号
A01B31/00
主分类号
A01B31/00
代理机构
代理人
主权项
地址
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